露天矿境界优化几何约束模型优化及其应用  

Optimization and Application of Geometric Constraint Model for Boundary Optimization in Open Mine

作　　者：张炬[1,2] 王李管[1,2] 宋华强[1,2] 任助理 毕林[1,2] ZHANG Ju;WANG Liguan;SONG Huaqiang;REN Zhuli;BI Lin(School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China;Digital Mine Research Center,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]中南大学数字矿山研究中心,湖南长沙410083

出　　处：《黄金科学技术》2018年第6期795-802,共8页Gold Science and Technology

基　　金：国家重点研发计划项目"深部金属矿集约化连续采矿理论与技术"(编号:2017YFC0602905);国家自然科学基金项目"基于深度学习和距离场的复杂金属矿体三维建模技术研究"(编号:41572317)联合资助

摘　　要：几何约束模型的合理性和复杂程度直接影响到模型构建的效率,进而对境界优化的速度产生影响,保证精度和提高运算速度是几何约束模型优化的重点。在总结常用拟合方式的基础上,提出了边坡轮廓插值方法和快速构建开采锥的算法:基于角度反比插值拟合模型,提出了边坡角随方位角、高程变化情况下,快速构建开采锥的环形搜索块判别方式,提高了开采锥构建的合理性和效率;给出了开采锥去冗余的方法,精简了块的几何约束关系,提高了开采锥构建的速度。将以上算法应用于某露天矿中,在构建价值模型基础上,批量生成了一组嵌套坑,选出了经济效益最优的最终境界。The rationality and complexity of geometric constraint model directly affect the efficiency of model building,and then affect the speed of boundary optimization.To ensure the accuracy and improve the operation speed is the key point of the optimization of geometric constraint model. On the basis of summarizing the common fitting methods,a method of slope contour interpolation and an algorithm for quickly constructing mining cone by simplifying the geometric constraint relation were proposed. Based on the angle inverse interpolation fitting model,the discriminant method was proposed to improve the rationality and efficiency of the mining cone construction of ring search block for constructing the mining cone quickly under the condition of slope angle changing with azimuth and elevation. It is mentioned that the method of redundancy of mining cone removal that simplified the optimization process and improved the operation speed of mining cone construction. On the basis of constructing the value model,a set of nested pits was produced in batches,and the ultimate pit of the mine was selected when applied to an open-pit mine.

关 键 词：露天矿境界优化 块段模型 边坡角 几何约束 反比插值法 开采锥构建 去冗余 

分 类 号：TD804[矿业工程—矿山开采]